77964788652 has 24 divisors (see below), whose sum is σ = 188190870000. Its totient is φ = 25092115776.

The previous prime is 77964788633. The next prime is 77964788653. The reversal of 77964788652 is 25688746977.

It is not an unprimeable number, because it can be changed into a prime (77964788653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112018027 + ... + 112018722.

It is an arithmetic number, because the mean of its divisors is an integer number (7841286250).

Almost surely, 2^77964788652 is an apocalyptic number.

It is an amenable number.

77964788652 is an abundant number, since it is smaller than the sum of its proper divisors (110226081348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77964788652 is a wasteful number, since it uses less digits than its factorization.

77964788652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224036785 (or 224036783 counting only the distinct ones).

The product of its digits is 284497920, while the sum is 69.

The spelling of 77964788652 in words is "seventy-seven billion, nine hundred sixty-four million, seven hundred eighty-eight thousand, six hundred fifty-two".